BUCKWHEAT FAMILY 389 



outer flowerless, the inner smaller; flowers yellowish, glabrous, ^ line long, 

 pedicellate. 



Sea-beaches, sand-dunes and sandy soils : Southern California from San 

 Pedro to San Diego and the western edge of the Colorado Desert. Lower 

 California. 



Locs. Long Beach, Parish; Del Mar, Jepson 1617; San Diego, K. Brandegee; Carrizo 

 Creek, Brandegee; Palm Sprs., Parish 4140. 



Eefs. NEMACAULIS DENUDATA Nutt. Jour. Acad. Phila. ser. 2, 1: 168 (1848), type loc. 

 San Diego, Nuttall. N. nutiallii Benth. in DC. Prodr. 14: 23 (1856); Wats. Bot. Cal. 2: 

 16 (1880). 



7. HOLLISTERIA S. Wats. 



White-woolly annual herbs. Leaves alternate, cuspidate, with a small 

 lanceolate pair at base like stipules. Involucres solitary and sessile in the 

 axils, composed of 3 almost distinct linear bracts, 2-flowered. Flowers un- 

 equally pedicelled, with a minute scarious bractlet at base. Calyx 6-cleft to 

 the middle. Stamens 5 to 9, included. Achene glabrous. One species. (Col. 

 W. W. Hollister, pioneer Calif ornian.) 



1. H. lanata Wats. Stems several or many from the base, prostrate, 3 to 

 7 inches long ; basal and lowest stem leaves oblanceolate, narrowed to a petiole, 



1 to 1% inches long, glabrate ; stem leaves ovate, sessile, cuspidate, 3 to 7 

 lines long, white-woolly; calyx 1 line long, very woolly outside, its lanceolate 

 lobes green with a scarious margin. 



Southern Monterey Co. easterly to the upper San Joaquin Valley. 



Loes. Oil City, Heller 7741; Caliente Creek, Davy 1902; Sumner, K. Brandegee. 



Eefs. HOLLISTERIA LANATA Wats. Proc. Am. Acad. 14: 296 (1879), type loc. Cholame 

 Valley, Monterey Co., Lemmon. Chorizanthe floccosa Jones, Contrib. 12: 74 (1908), type 

 loc. Bakersfield, Jones. 



8. LASTARRIAEA Remy. 



Small fragile annual, diffusely branched from the base. Leaves linear, in 

 a basal tuft and in whorls along the stem, the upper ones and the bracts with 

 hooked awns. Flowers solitary, sessile in the forks and terminal, concealed 

 by the involucre-like whorl of bracts. Calyx simulating an involucre, tubular, 

 5 to 6-cleft, the teeth with hooked awns. Stamens 3, inserted on the throat, 

 the filaments with a small membranous tooth on each side. One species. (J. 

 V. Lastarria, 1817-1888, Chilean publicist and writer.) 



1. L. chilensis Remy. Stems 2 to 10 inches long; herbage slightly hairy; 

 floral bracts crowding the ends of the branchlets, scattered below; calyx 1 to 



2 lines long. 



Naturalized from Chile. Dry sandy soil: Antioch southward to Kern and 

 Monterey cos. and Southern California, thence north to Mono Co. Lower 

 Cal. May-June. 



Refs. LASTARRIAEA CHILENSIS Remy, in C. Gay, Fl. Chil. 5: 290, t. 58 (1849), type loe. 

 Chile; Jepson, Fl. W. Mid. Cal. 149 (1901). Chorizanthe lastarriaea Parry, Proc. Davenp. 

 Acad. 4: 63 (1884); West Am. Sci. 1: 29 (1885). 



9. CHORIZANTHE R. Br. 



Low dichotomously branched annual herbs of summer. Leaves mostly in a 

 basal rosette which disappears early in the dry season, the cauline leaves 

 commonly reduced to opposite, ternate or unilateral bracts. Involucres com- 

 monly 1, sometimes 2 to 6-flowered, cylindric, urnshaped or triangular, al- 

 ways sessile, mostly 3 to 6-angled or -costate, 3 to 6-toothed or -cleft; teeth 

 divaricate, cuspidate or awned, the awns commonly with a hooked tip. Flowers 

 pedicelled or nearly sessile, without bractlets, included within the involucre or 

 the calyx protruding. Calyx 6-parted or -cleft, colored, never herbaceous. 

 Stamens usually 9, 6 or 3. Ovary glabrous. Thirty Pacific Coast species in 

 North America and 7 suffrutescent ones in Chile. Ours are of the deserts or 

 arid foothills. The basal leaves are often different in color from the cauline 



